Climate signals in stable carbon and hydrogen isotopes of lignin methoxy groups from southern German beech trees

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Anna Wieland
  • Markus Greule
  • Philipp Roemer
  • Jan Esper
  • Frank Keppler
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000840411200001&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.5194/cp-18-1849-2022
eISSN
1814-9332
Externe Identifier
  • Clarivate Analytics Document Solution ID: 3T6WF
ISSN
1814-9324
Ausgabe der Veröffentlichung
8
Zeitschrift
CLIMATE OF THE PAST
Paginierung
1849 - 1866
Datum der Veröffentlichung
2022
Status
Published
Titel
Climate signals in stable carbon and hydrogen isotopes of lignin methoxy groups from southern German beech trees
Sub types
  • Article
Ausgabe der Zeitschrift
18

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:p>Abstract. Stable hydrogen and carbon isotope ratios of wood lignin methoxy groups (δ13CLM and δ2HLM values) have been shown to be reliable proxies of past temperature variations. Previous studies showed that δ2HLM values even work in temperate environments where classical tree-ring width and maximum latewood density measurements are less successful for climate reconstructions. Here, we analyse the annually resolved δ13CLM values from 1916–2015 of four beech trees (Fagus sylvatica) from a temperate site near Hohenpeißenberg in southern Germany and compare these data with regional- to continental-scale climate observations. Initial δ13CLM values were corrected for the Suess effect (a decrease of δ13C in atmospheric CO2) and physiological tree responses to increasing atmospheric CO2 concentrations considering a range of published discrimination factors. The calibration of δ13CLM chronologies against instrumental data reveals the highest correlations with regional summer (r=0.68) and mean annual temperatures (r=0.66), as well as previous-year September to current-year August temperatures (r=0.61), all calculated from 1916–2015 and reaching p&lt;0.001. Additional calibration trials using detrended δ13CLM values and climate data (to constrain effects of autocorrelation on significance levels) returned rsummer=0.46 (p&lt;0.001), rannual=0.25 (p&lt;0.05) and rprev.September-August=0.18 (p&gt;0.05). The new δ13CLM chronologies were finally compared with the previously produced δ2HLM values of the same trees in order to evaluate the additional gain of assessing past climate variability using a dual-isotope approach. Compared to δ13CLM, δ2HLM values correlate substantially more strongly with large-scale temperatures averaged over western Europe (rprev.September-August=0.69), whereas only weak and mainly insignificant correlations are obtained between precipitation and both isotope chronologies (δ13CLM and δ2HLM values). Our results indicate the great potential of using δ13CLM values from temperate environments as a proxy for local temperatures and, in combination with δ2HLM values, to assess regional- to sub-continental scale temperature patterns. </jats:p>
Autoren
  • Anna Wieland
  • Markus Greule
  • Philipp Roemer
  • Jan Esper
  • Frank Keppler
DOI
10.5194/cp-18-1849-2022
eISSN
1814-9332
Ausgabe der Veröffentlichung
8
Zeitschrift
Climate of the Past
Sprache
en
Online publication date
2022
Paginierung
1849 - 1866
Status
Published online
Herausgeber
Copernicus GmbH
Herausgeber URL
http://dx.doi.org/10.5194/cp-18-1849-2022
Datum der Datenerfassung
2022
Titel
Climate signals in stable carbon and hydrogen isotopes of lignin methoxy groups from southern German beech trees
Ausgabe der Zeitschrift
18

Datenquelle: Crossref

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